Stencil-plate printing



PATENT OFFICE.

SAMUEL T. SANFORD, OF FALL RIVER, MASSACHUSETTS.

STENGIL-PLATE PRINTING.

Specification of Letters Patent No. 17,340, dated May 19, 1857.

.To all 107mm 'it muy concern:

Be it known that I, SAMUEL T. SANFORD, of Fall River, in the county ofBristol and State of Massachusetts. have invented a new and ImprovedMachine for Stenciling, which machine I term a Stencil-PlatePrinting-Press, and I do hereby declare that the following is a full.clear, and exact description of the same, reference being had to theannexed drawings. making a part of this specification, in which"- Figurel, is a transverse vertical section of my improvement. Fig. 2, is afront view of ditto.

Similar letters of reference indicate corresponding parts in the twofigures.

This invention relates to that species of press in which the printing isdone by means of a stencil plate used in combination with color orprinting` rollers.

y improvement consists in having the stencil plate made in the form ofan endless belt or ring..l

To enable those skilled in thx` art to fully understand and constructlny invention, I will proceed to describe it.

A, A, represent two heads which are properly secured to a base B. Theheads A, A, have slots o, made in them, one in each. and in the slotsthe bearings 7), of rollers C, D, E, are fitted. The bearings of thecenter roller D, are permanently secured in the heads A, A, but thebearings of the upper roller E, may be moved or adjusted by set screwsF, F, and the bearings of the lower roller rest on spiral springs c.

Between the two heads A, A, and directly underneath the lower rollerC,"an ink chamber or reservoir G, is placed, the roller C, working insaid chamber or reservoir.

The rollers O, D, E, are formed of an elastic or yielding substance orcomposition, precisely the same as in the ink rollers of the usualprinting` presses.

H, represents an endless stencil plate belt. This belt is formed ofsheet metal of the usual thickness, or such as is commonly used for suchpurpose. The stencil plate passes between the two rollers D, E, andunderneath the ink chamber or reservoir G. The belt, H, is cut throughso as to form a series of stencils or a continuous one, as may bedesired.

I, represents a roller the journals of which are fitted in supports (Z,attached to the heads A, A. The roller I, may be constructed of Wood,and the roll of cloth, paper or other material J, to be stenciled o1'printed is rolled thereon.

To one end of the axis of the roller D, a crank K, is attached. l

The operation is as follows: As the crank K, is turned mot-ion is giventhe three rollers C, D, E, the rollers rotating in the direc tionindicated by the arrows l, and the stencil belt H. moving in thedirection indicated by arrow 2. The roller C, is supplied with ink fromthe fountain or reservoir G, and the roller D, receives the ink from theroller C. The paper or cloth J, is placed between the two rollers D, E,the paper or cloth being upon the stencil plate H. The paper or clothmoves in the direction indicated by arrow 3. The upper roller E, pressesthe cloth or paper firmly upon the stencil belt Il, and the roller D, inconsequence of being soft, pliable or elastic is pressed up through thestencil and leaves the impression upon the cloth or paper J.

It is essential that the rollers C, D, E, be composed of a soft orpliable material, especially the roller l), so that its periphery mayprotrude through the perforations of the stencil belt and leave theimpression or marking upon the cloth or paper J. The roller E, also, bybeing constructed of the same material.` serves to force the cloth orpaper J. through the perforations in the stencil belt.

I would remark that a series of rollers E, might be placed around theroller D, and several rollers of paper or clot-h stenciled at once or atthe same time.

In the Zwalm?, illecita/niels Magazine, Vol.

57, page 393, (1852,) may be found a description of a stencil presswhich consists in the use of flat or curved stencil plates incombination with color rollers composed of flexible materials, fordepositing colors on fabrics through the plates. I therefore disclaimthe invention of said device. But, to the best of my knowledge andbelief, it is new to have the stencil plate made in the form of anendless belt, as herein set forth.

Therefore I claim, and desire to secure by Letters-Patent- Having thestencil plate made in the form of .an endless belt, H, as and for thepurposes set forth.

SAMUEL T. SANFORD, p

